KR20020031281A - Water Permeable concrete pavement overlaid with waste tire chip composition - Google Patents

Abstract

PURPOSE: A concrete pavement layer having waste tire chip layer is provided for evaporation of water so that, in a dry season, the evaporated water can be supplied to a roadside tree and, in a rainy season, flooding of a river is prevented. CONSTITUTION: The concrete pavement layer having waste tire chip layer comprises an auxiliary layer, a base layer formed on the auxiliary layer, and a waste tire chip layer of the thickness of 10 to 20 mm formed on the base layer. The pavement using waste tires is good to the protection of environment. Furthermore, owing to elasticity of rubber, it can reduce a fatigue by absorbing the impact produced by walking so that an injury received in fell down can be reduced.

Description

Water Permeable concrete pavement overlaid with waste tire chip composition}

The present invention relates to a concrete pavement method in which a waste tire chip layer is formed that is effective for pavement of sidewalks, bicycle paths, trails (parks, golf courses) and the like.

In general, permeable concrete helps rainwater penetrate into the ground through the gap between aggregate and aggregate to help the growth of plants such as roadside trees, and in rainy, heavy rain, and rainy seasons, rainwater seeps into the ground and is stored in the soil. It prevents flooding and is comfortable for pedestrians due to no rain or flowing water on the sidewalk. Because of these advantages, a lot of pitched concrete roads are spreading.

Generally, permeable asphalt concrete and permeable cement concrete are used for permeable pavement for existing roads, sidewalks and bicycle roads. However, asphalt concrete has a lot of functional defects such as severe deformation of road surface in summer, and voids on road surface due to the viscosity of asphalt. In contrast, the permeable cement concrete pavement layer is used with or without the use of small aggregates, the slump is managed close to " 0 " to secure the continuous voids to handle the way the water is made.

However, such a permeable concrete pavement layer also has the following problems. That is, in order to apply the surface of the epoxy-based paint to the surface beautifully, in the case of the ramp, slippery problem than the general concrete occurs, and because it is a rigid pavement, there is also a problem of falling and injury.

In addition, since the surface is rough and the strength is reduced, the surface peeling phenomenon appears, fine dust, etc. in the pores are well caught, so the permeability is sharply lowered, road surface maintenance costs are excessively consumed to remove it.

The purpose of the present invention is the two-way permeability of the rainwater that is permeated into the ground to evaporate to the ground to prevent the smooth supply of life water to the roadside and the flooding of rivers and rivers in public waters, cities, and high slip resistance It is to provide a pavement layer in which a waste tire chip layer is formed, which is safe, comfortable to pass and eliminates visual impairment due to diffuse reflection, and can reduce vehicle noise due to excellent sound absorption.

Another object of the present invention is the efficient recycling of resources for waste tires, which are suffering from shortage of landfill, environmental pollution (in case of incineration of dioxin, etc.) and evasion of local residents due to the rapid increase in the amount of generation due to the development of the automobile industry. In order to provide a concrete pavement layer formed waste tire chip layer that can be solved in terms of environmental and environmental conservation.

1 is a cross-sectional view of a conventional concrete pavement layer and a cross-sectional view of a permeable concrete pavement layer.

2 is a cross-sectional view of the concrete pavement layer formed a waste tire chip layer according to the present invention.

3 and 4 are cross-sectional views showing an embodiment according to the present invention.

5 is a process chart showing a construction method of a concrete pavement layer in which a waste tire chip layer is formed according to the present invention.

With reference to FIG. 2, the present invention will be described in detail.

The present invention is cured by laying a permeable concrete layer with a 5 ~ 13㎜ aggregate on the crushed stone base and 2.5 ~ 5㎜, 2.5 ~ 7㎜, 2.5 ~ 10㎜, 5 ~ 10㎜, 2.5 depending on the purpose of the particle size after joint installation Waste tire chip layer with binder and pigment mixed on waste tire chip adjusted to ˜13 mm and 5 to 13 mm was laid on the base permeable concrete at 10-20 mm and cured or overlaid on the existing package. It relates to a concrete pavement layer formed a chip layer.

Permeable concrete is to adjust the particle size of the aggregate so that the concrete has a permeability, the inventor of the present invention already has a patent on the 'color permeable concrete' registered in the patent 1321371. The present invention relates to a permeable concrete having improved permeability by using a single grain aggregate of 6-10 mm without using fine aggregate. The water-permeable concrete layer of the present invention is a waste tire chip layer formed on the water-permeable concrete layer of Patent No. 132371.

In the present invention, the permeable concrete layer is a patent registration No. 131971 is a finish by itself, so if the aggregate is thick, the surface may be rough, the limit was 10mm. However, in the present invention, the aggregate used for the water-permeable concrete layer may be slightly thicker than Patent No. 1319371 because the waste tire chip layer is further formed on the water-permeable concrete layer. Therefore, the aggregate used in the permeable concrete layer of the present invention uses a 5-13 mm range. Examples of the material used for the permeable concrete layer include 5 to 13 mm aggregate 1560 to 1716 kg / m3, cement 300 to 380 kg / m3, water 84 to 133 kg / m3 (water-cement ratio of about 28 to 30%), admixture 0.2 ~ 0.5㎏ / ㎥ is used by kneading.

The waste tire chip layer used in the present invention is a binder for 100 g of waste tire chips of 2.5 to 5 mm, 2.5 to 7 mm, 2.5 to 10 mm, 5 to 10 mm, 2.5 to 13 mm, and 5 to 13 mm depending on the application. 10-25 g and inorganic pigment 3-4 g are mixed and used. As the binder, various resins such as urethane, epoxy and acrylic may be used. The binder is used to bond the waste tire chips, and the amount of the binder may vary depending on the type of binder.

The inorganic pigment mixed with the waste tire chip layer is intended to give a sense of color and does not necessarily need to be incorporated into the waste tire chip layer, and may be treated by a separate process. That is, even after the waste tire chip layer is formed, the surface of the waste tire chip layer may be further sprayed with a polymer such as epoxy, urethane, acryl and colored to achieve the object of the present invention.

Table 1 shows the mixing examples of various waste tire chip sizes.

Waste Tire Chip (g) Binder (g) Pigment (g) Particle Size of Waste Tire Chip No.1 100 15 4 2.5 mm to 5 mm No.2 100 13.75 3.75 2.5 mm-7 mm No.3 100 13.75 3.75 2.5 mm to 10 mm No.4 100 13.75 3.75 5 mm to 10 mm

The waste tire chip used here was purchased and used by Korea Resources Reclamation Corporation. The size of waste tire chips sold by reclamation works are 5mm, 7mm, and 10mm. In order to adjust the particle size, the size of each tire was adjusted from 2.5mm sieve and 5mm sieve. There are no 13mm chips on the market today, but this size is also available.

The binder was urethane, which was PR-2000-85 of Aekyung Chemical.

Next, a permeability test was performed according to the size of the waste tire chip.

The permeability of the waste tire chip layer depends on the size of the chips constituting the layer. The permeability coefficient was measured and recorded in Table 2 to evaluate the permeability performance of the tire tire size.

Waste Tire Chip Granularity Permeability coefficient (cm / sec) No.1 5-10 mm 10.85 × 10-2 No.2 2.5-10 mm 10.68 × 10-2 No.3 2.5-7 mm 8.57 × 10-2 No.4 2.5-5 mm 8.34 × 10-2

The formula for calculating the permeability coefficient of Table 2 is as follows.

Where K: Permeability coefficient (cm / sec)

L: Thickness of packaging surface layer (cm)

a: cross-sectional area of the container (cm2)

A: Permeable area (cm2)

h1: Measurement start water level (cm)

h2: Measurement end level (cm)

t1-t2: pitching time

The calculated coefficient of permeability does not show a big difference, because it has less compaction and a large gap between the used tire chips, and in the case of the block, it is expected to have a smaller value because it is manufactured by applying a compressive force. In the case of increasing the amount of the binder is also used to fill the voids is considered to have a slightly smaller value.

The above result is the case of adjusting the particle size so that the waste tire chip layer has permeability, and if the impermeability is needed, the waste tire chips of 5mm, 7mm and 10mm size sold by the resource recycling work It is good to mix. Chips sold above are mixed with a variety of particles ranging from fine powder to the size of a predetermined standard has water impermeability when used as is.

With reference to FIG. 5, the process of wrapping the colored concrete in which the waste tire chip layer of this invention was formed is demonstrated.

<Step 1>

The subgrade is sufficiently compacted to exert sufficient bearing capacity, and a filter layer is provided thereon to prevent subgrade soil from penetrating into the subgrade.

<Step 2>

The crushed stone layer is laid and compacted so as not to separate the material by using attraction force or dozer or the like to have a predetermined shape on the filter layer. The compaction at this time uses a roller or a compactor at the optimum water content. Examples of the material for the crushed stone layer include a clean membrane crusher (crusher run) of 25 mm or less, grain size adjusting crushed stone, recycled concrete aggregate, and the like.

<Step 3>

Base permeable concrete is laid on the crushed stone layer and compacted. The base permeable concrete layer uses an aggregate having a particle size in the range of 5 to 13 mm to secure a predetermined strength (compressive strength of 100 kg / cm 2 or more) and permeability (permeability coefficient of 1 × 10 ⁻³ cm / sec).

<Step 4>

When the basement concrete is cured, install the cutting. Cut and wash with water to prevent cracking. Since the waste tire chip layer is covered on top, it does not seal.

<Step 5>

A waste tire chip composition in which waste tire chips, binders (urethane, epoxy, acrylic, etc.) and pigments are mixed is laid on the substrate-permeable concrete layer in a thickness of 10 to 20 mm and compacted by hand rollers or compactors. At this time, apply heat to the roller or compactor, apply oil or chemicals to prevent waste tire chips from sticking, and prohibit passage until curing. In this process, the primer may be applied before the waste tire chip layer is laid to secure the interlayer adhesion. And the waste tire chip color permeable concrete is sufficient to be installed to maintain the flatness to a thickness of 10 ~ 20㎜, the permeability coefficient is compacted to be more than 1 × 10 ^-3 cm / sec. When this is done, the waste tire chip color-permeable concrete is filled between the pores of the base-permeable concrete and between the joints, which makes the adhesion between the two layers more perfect.

Waste tire chips are used in various ranges depending on the permeability of 2.5 ~ 5mm, 2.5 ~ 7mm, 2.5 ~ 10mm, 5 ~ 10mm, 2.5 ~ 13mm, 5 ~ 13mm, etc. The thing of the range of 0-5 mm, 0-7 mm, 0-10 mm, and 0-13 mm is used. When adding a pigment for coloring in this process, it is preferable to restrict within 4 weight% of a waste tire.

<Step 6>

When no pigment is used in the waste tire chip layer, the surface of the layer may be colored by spreading a polymer such as epoxy, urethane, or acrylic. In this case, not only the coloring but also the surface strength is increased.

On the other hand, as shown in Fig. 4, as well as the permeable concrete newly laid on the base layer, it is natural that a method of additionally forming and packaging a waste tire chip layer on an already installed sidewalk block is possible.

When the sidewalks and roads are paved with permeable concrete that forms the waste tire chip layer of the present invention, the rainwater permeated into the ground can be evaporated as moisture in the dryer, so it is utilized as a life tree of roadside trees, heavy rain, heavy rain, rainy season, etc. Contribute to preventing flooding of sewers, rivers and rivers in cities.

In addition, it is possible to pass safely on the road because water does not flow and does not flow, and in the case of roads, the sliding resistance is increased, so that the vehicle can be safely operated, and the diffuse reflection of water on the road greatly reduces the visual impairment phenomenon. It is eliminated and excellent sound absorption helps to reduce vehicle traffic noise.

In addition, the recycling of waste tires, a social and environmental problem, has a great effect in terms of environmental protection, and the elasticity of rubber allows the user to absorb shocks while walking, thereby reducing fatigue, and reducing injuries even when falling.

Claims (7)

A substrate formed on the auxiliary substrate; And A waste tire chip layer formed on the base layer in a thickness of 10-20 mm; Concrete pavement layer formed waste tire chip layer, characterized in that consisting of. The waste tire chip layer is a waste tire chip layer formed by mixing 10-25 g of binder and 1-4 g of inorganic pigment with respect to 100 g of 2.5 mm-13 mm of waste tire chip in order to have water permeability. Concrete pavement layer formed a waste tire chip layer. According to claim 2, The waste tire chip layer has a particle size range of 2.5mm-5mm, 2.5mm-7mm, 2.5mm-10mm, 5mm-10mm, 2.5mm-13mm, 5mm-13mm, respectively, depending on the application Concrete pavement layer formed a waste tire chip layer. The waste tire chip layer of claim 1, wherein the waste tire chip layer is a waste tire chip layer formed by mixing 10-25 g of binder and 1-4 g of inorganic pigment with respect to 100 g of the waste tire chip having an impermeability. Concrete pavement layer with tire chip layer. The concrete pavement layer of claim 4, wherein the waste tire chip layer has particle size ranges of 0 mm to 5 mm, 0 mm to 7 mm, 0 mm to 10 mm, and 0 mm to 13 mm, respectively, according to a use. The concrete pavement layer of claim 1, wherein the base layer is a permeable concrete layer or an existing sidewalk block layer having a 5-13 mm single grain aggregate. The concrete pavement layer of claim 1, further comprising coloring by spraying a polymer such as epoxy, urethane, and acrylic on the surface of the waste tire chip layer.